- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383693 > OPA623AP Wide Bandwidth, Current-Feedback OPERATIONAL AMPLIFIER PDF資料下載
參數(shù)資料
| 型號(hào)： | OPA623AP |
| 英文描述： | Wide Bandwidth, Current-Feedback OPERATIONAL AMPLIFIER |
| 中文描述： | 寬帶，電流反饋運(yùn)算放大器 |
| 文件頁(yè)數(shù)： | 12/15頁(yè) |
| 文件大小： | 254K |
| 代理商： | OPA623AP |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)
12
OPA623
CIRCUIT LAYOUT
The high-frequency performance of the operational ampli-
fier OPA623 can be greatly affected by the physical layout
of the printed circuit board. The following tips are offered as
suggestions. Oscillations, ringing, poor bandwidth and set-
tling, and peaking are all typical problems that plague high-
speed components when they are used incorrectly.
A resistor (100
to 250
) in series and close to the high-
impedance, noninverting input is necessary to reduce
peaking; this resistor prevents any very high-frequency
oscillations at the op amp input, which can lead to an
excessive increase in quiescent current.
Bypass power supplies very close to the device pins. Use
tantalum chip capacitors (approximately 2.2
μ
F) with a
parallel 470pF ceramic chip capacitor. Surface-mount
types are recommended because of their low lead induc-
tance. Although the OPA623 operates at a low quiescent
current, high charging and discharging currents flow
during steep transitions.
PC board traces for power lines should be wide to reduce
impedance and inductance.
Make short low-inductance traces. The entire physical
circuit should be as small as possible.
Use a low-impedance ground plane on the component
side to ensure that low-impedance ground is available
throughout the layout, however, do not extend the ground
plane under high-impedance nodes such as the amplifier’s
input terminals, which are sensitive to stray capacitances.
Sockets are not recommended because they add signifi-
cant inductance and parasitic capacitance.
Use low-inductance, surface-mounted components. Cir-
cuits using all surface-mount components with the
OPA623AU will offer the best AC performance.
Plug-in prototype boards and wire-wrap boards will not
function well. A clean layout using RF techniques is
essential—there are no shortcuts.
Make the feedback trace as short as possible. The invert-
ing input is sensitive to stray capacitances that lead to
peaking in the frequency response. A stray capacitance at
the inverting input increases the gain at high frequencies.
FIGURE 10. Circuit Schematic for Non-inverting and Inverting Configuration. Refer to Table I for Resistor Values.
OPA623AP
GAIN
+1
OPA623AU
GAIN
+1
COMPONENT
–2
–1
+2
+5
+10
–2
–1
+2
+5
+10
R
i
R
1
R
2
R
N1
R
N2
150
390
—
200
68
150
390
—
390
56
200
360
—
—
—
180
300
300
—
—
100
300
75
—
—
100
130
15
—
—
150
390
—
200
68
150
390
—
390
56
270
470
—
—
—
180
300
300
—
—
100
300
76
—
—
100
160
18
—
—
Typical
Bandwidth (MHz)
V
OUT
= 0.2Vp-p
V
OUT
= 2.8Vp-p
TABLE I. Recommended Component Values.
200
330
—
360
320
340
290
350
—
260
170
210
200
330
—
360
320
340
290
350
—
260
170
210
Non Inverting
R
O
50
OPA623
R
3
50
3
2
6
R
i
R
1
Out
In–
R
N2
4
7
R
2
In+
Inverting
R
O
50
OPA623
3
2
6
R
i
R
1
Out
4
7
R
N1
+5V
Gnd
–5V
C2
470pF
C4
10nF
C6
2.2μF
C1
470pF
C3
10nF
C5
2.2μF
7
4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OPA623AU | Wide Bandwidth, Current-Feedback OPERATIONAL AMPLIFIER |
| OPA628AU | Low Distortion Wideband OPERATIONAL AMPLIFIER |
| OPA628 | Low Distortion Wideband OPERATIONAL AMPLIFIER |
| OPA654 | Wide Bandwidth, High Output Current Difet OPERATIONAL AMPLIFIER |
| OPA654AM | Wide Bandwidth, High Output Current Difet OPERATIONAL AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA623AU | 制造商:BB 制造商全稱:BB 功能描述:Wide Bandwidth, Current-Feedback OPERATIONAL AMPLIFIER |
| OPA6250 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wideband, Unity-Gain Stable, FET-Input OPERATIONAL AMPLIFIER |
| OPA625IDBVT | 功能描述:General Purpose Amplifier 1 Circuit Rail-to-Rail SOT-23-6 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 壓擺率:115 V/μs 增益帶寬積:120MHz -3db 帶寬:- 電流 - 輸入偏置:2μA 電壓 - 輸入失調(diào):100μV 電流 - 電源:2mA 電流 - 輸出/通道:150mA 電壓 - 電源，單/雙（±）:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商器件封裝:SOT-23-6 標(biāo)準(zhǔn)包裝:1 |
| OPA627 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Precision High-Speed Difet OPERATIONAL AMPLIFIERS |
| OPA627/637 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High-Performance, Fully-Differential AUDIO OP AMP |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。